Hose cowling



Jan. 18, 1938. A. A. EISENMAN HOSE COUPLING Original Filed June 9, 1932 I 127,/

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'Ressued Jan. 18, 1938 t I UNITED STATES' -PlrliENr o1-*FICE I HOSE COUPLING original No. 1,924,112. dated August 29, 1933, se-

rial No. 616,244- Juue 9, 1932. Application for. reissue April 22, 1935, Serial No. 17,594

1o claims. (c1.o zas-s4) 'This invention pertains to hose couplings, and more particularly to a metallic coupling adapted to be pressed on to the end of a non-metallic, flexible, reinforced hose. I 1

The invention has primarily for its object to provide an exceedingly simple, inexpensive and durable coupling, designed to receive the prepared end of a non-metallic, flexible, reinforced hose, and when clamped thereon to become embedded in the interstices of the reinforcing materlal, and in a portion of the hose covering.

Incidental to the foregoing, a more specific object of the invention residesvin the provision of a metallic coupling utilizing an inner sleeve of comparatively soft, ductile material. adapted to be forced into interlocking engagement with the coupling and reinforcement, upon compression of the coupling on the hose.

.A sun runner object resides in the method of AQ0 attaching a coupling of the foregoing character to a non-metallic, flexible, reinforced hose, .consisting in removing a portion of the hose covering to expose the reinforcement, inserting the exposed reinforced end into a ductlle metal sleeve contained within the coupling, and thereafter compressing the couplingto cause the same to grip a portionof the covering and force the ductile sleeve to flow and embed itself into the inner face of the coupling and the interstices of the reinforcement.l

With the above and other objects in view, which will appearas the description proceeds, the invention' resides in the novel construction, com-v bination and arrangement of parts, substantially `3g; as hereinafter described and more particularly defined by the appended claims, it being understood that such changes 'in the precise embodiment Iof the herein 'disclosed invention may be made as come within the scope 'of the claims. 40 In the accompanying drawing is illustrated one complete example oi' the physical embodiment` of the present invention constructed according to the best mode so far devised for the practical application ofthe principles thereof. s

u In the drawing:

:figure r is a longitudiual section of the preferred form ofthe present invention; the sev eral parts being arranged vin:,'lux/taposition prior tion of the invention, illustrating the parts in vassembled relation prior to attachment of the coupling; and

Figure 4 is a similar View of the modified coupling attached.

Referring now more particularly to the accompanying drawing, the invention is illustrated in' connection with a non-metallic, flexible, reinforced hose, comprising an inner core I formed from iiexible rubber, or similar material, and surrounded by a metallicv reinfbrcinglayer" 2,. which, in the present instance, is formed from a wire mesh fabric? wound over the core. Sur- 10 rounding the reinforcing layer 2 issa covering 3, also formed from rubberuor similar material, and over the cover 3 is a' fabric cover 4. 'I'he foregoing construction of hose is more or less con;

ventional and therefore forms no specific part of 15 the present invention, other than in the combinationA hereinafter. claimed. It is also to be understood that the present invention, which resides ,essentially in the coupling, may be applied to other structures of hose, provided with 20 metallic reinforcement, without departing from the invention.

In that ,form of the .invention illustrated in Figure l, the coupling proper comprises a sleeve 5 provided at its outer end witha threaded recess 25 8 for reception `pf a threaded pipe or nipple, to which the coupling is to be attached. The outer end of the shell may be hexagonally flattened or l knurled at 'I for the reception of a suitable'tool to facilitate its attachment.- vThe inner face of 30 the sleeve- 5 may be mutilated in any suitable manner to'fprovide a roughened surface. In that form illustrated, thesame is provided with an- -nullar grooves or threads 8, while thelin'nerend of 'the recess is provided with a tapered/shoulder 35 9. The usual nipple or insert I0, provided with annular groovesfis threaded into the coupling centrally of its recess, the same being inserted lnto the central core l of the hose-in the assex'ncess, in the manner illustrated in the drawing, the '45 outer periphery of the ring Il being of substantially the same diameter as the interior of theI shell 5.`

In order to assemble the hose and coupling, a t portion of the rubber and fabric coverings 3 and 50 l, respectively, is cut away to exposethe enci of the reinforcement 2; The hose" thus prepared isl forced over the insert I0, as shown in Figure 1, L and abutted against the inner endof the recess within the' coupling shell, the extreme end ex- 55` ll. In this position the cut-away end of the covering is so gauged as to abut the outer end of the ductile ring, and while the abutting ends are shown as formed on a taper, the same may be straight Without departing from the invention.

After the hose and coupling are thus assembled, the coupling shell 5 is compressed within a suitable die or vise, causing the ductile-material of the ring Il tobe forced and embedded in the interstices of the metallic reinforcement 2,

and also into the grooves or mutilations formed ,on the inner face of the shell, as best disclosed .outer end of the coupling shell 5 slightly compresses the covering 3 and securely grips the same because of the interior mutilations.

Thus, it will be readily seen that a coupling, constructed and assembled upon a hose in the foregoing manner, practically becomes an integral part of the hose, in that the ductile material becomes compactly forced into both the reinforcement of the hose and the mutilations or grooves within the shell. Therefore, an extremely rigid and durable coupling has been provided, in addition to securely sealing the same on the hose, inasmuch as the outer end of the shell also tightly compresses and clamps the covering. Furthermore, compression of the coupling causes the inner core to be clamped securely to the annularly grooved insert, thus making it practically impossible to remove the coupling without mutilation of the same.

Furthermore, inasmuch. as the primary clamping action occurs between the coupling and the reinforcement of the hose, there is no lmutilation of the flexible portion of the hose to cause rapid deterioration of the same. Consequently, a hose provided with a coupling of the foregoing A character is capable of exceedingly long life.

The modification of the present invention, illustrated in Figures 3 and 4, differs from the foregoing only in hat the ductile ring Il. is.ellmi' nated. In this instance, the material of the shell itself is forced into the interstices in the reinforcement. Here the hose is prepared in the same manner as heretofore described, and, as shown in Figure 1, the interior of the recess, formed in the coupling shell 5', is normally ystraight andnprovided with mutilations or annular teeth 8'. `The inner end of the hose abuts the `end of the recess, while the outer end of the shell extends over the coverings 3 and 4. Normally the outer surface of the shell 5' is provided with a plurality of annular flutes, and after the several parts have been assembled, the coupling sleeve is then forced into a suitable die, which compresses the outer end of the shell and the projecting annular flutes I2, causing the inner surface of the recess to assume a general iiuted contour, the flutes being forced into the interstices of the reinforcement, while the outer end of the shell clamps and `compresses theouterI coverings of the hose 3 and 4, respectively..

Obviously, the foregoing structure must be formed ofv relativelysoft material in.order to transpose the flutes from the exterior of the shell `to the interior, as heretofore described, and,

therefore, in instances where a metallic coupling tending beyond the inner end of the ductile ringV of relatively hard material is desired, the ductile inner ring may be used in preference.

While the invention has been described in con- .nectlon with the specific structures illustrated,

cover, anda ductile ring positioned in said shell over theexposed reinforcement, said shell being compressed upon the hoseto clamp the cover and force said ductile ring into the interstices of said reinforcement.

2. In combination with a non-metallic, flexible, reinforced hose having the end of its cover cut away to expose a portion of the reinforcement, a coupling shell extending over the exposed reinforcement and a portion of the hose cover, and a ductile ring positioned in said shell over the exposed reinforcement, said shell having a roughened inner surface and being compressed upon l the hose to clamp the cover and force said ring into its roughened surface and the interstices of said reinforcement.

3. ,In combination with anon-metallic, ilexible, reinforced hose having the end of its cover cut away to expose a portion of the reinforce-v ment, acoupling shell provided with a tapered shoulder at the inner end of its recess and extending over the exposed reinforcement and a portion of the hose cover, and a ductile ring posi- Y tioned in said shell over the exposed reinforcement, said ring abutting said shoulder, and said shell being compressed upon the hose to clamp the cover and force said ductile ring into the interstices of said reinforcement.

4. In combination with a non-metallic, flexible, reinforced hose having the end of its cover cut away to expose a portion of the reinforcement, a coupling shell extending over the exposed reinforcement and a portion of the hose cover, said shell being provided with aclosed end and a shoulder adjacent thereto, and a ductile ring positioned in said shell over the exposed reinforcement and engaging said shoulder, the opposite end of said ring abutting the end of saidycover, said shell having a roughened inner surface and being compressed upon the hose to clamp the cover and force said ductile ring into its roughened surface and the interstices of said reinforcement.

said tubular means including a ductile ring ofI -material different from the material of said coupling body, said ring being in direct intimate contact with said reinforcing layer through a continuous length thereof, said tubular means being compressed upon the hose to clamp Said reinforcing layer and said non-metallic inner layer against said nipple whereby a fluid-tight seal is effected between said nipple and said inner layer, and to force the metal of said ring into the interstices of said reinforcing layer to effect a mechanically strong connection between said body and said hose.

8. In combination with a hose having inner and outer layers of rubber and an intermediate reinforcing layer of material providing interstices, a metal nipple inserted in said inner layer to prevent collapse thereof, metallic coupling means attached to said nipple and having tubular means extending over an exposed portion of said reinforcing layer and Aover the adjacent end of said outer layer, said tubular means including a ductile ring in direct intimate contact with said reinforcing layer throughout a substantial continuous length thereof, said tubular means being compressed upon the hose to clamp said reinforcl ing layer and said inner layer against said nipple whereby a huid-tight seal is effected between said nipple and said inner layer, and to force the metal of said ductile ring into the interstlces of saidreinforcing layer to eifect a mechanically strong connection between said body and said hose.

7. In combination with a flexible, reinforced rubber hose having the end of its cover cut away to expose a portion of the reinforcement, said reinforcement being of metal, a coupling shell extending over the exposed reinforcement and a portion of the hose cover, and a ductile ring positioned in said shell over the exposed reinforcement, said shell being compressed upon the hose to clamp the cover and force said ductile n'ng into the interstices of said reinforcement.

8.' In combination with a non-metallic flexible reinforced hose having the end of its cover cut away to expose a portion of the reinforcement, a

coupling shell extending over the exposed rein;-

forcement and a portion of the hose cover, a nipple extending into the bore of the hose to prevent collapse thereof, and a ductile ring positioned in said shell over the exposed reinforcement, said shell being compressed upon the hose to clamp the cover and force said ductile ring into the interstices of said reinforcement.

9. In combination with a non-metallic exible reinforced hose having an inner layer of rubber and a cover, the end of the cover being cut away to expose a portion of the reinforcement, a coupling shell extending over the exposed reinforcement and a portion of the hose cover, a metallic l nipple provided with annular grooves located in the bore of said hose, and a ductile ring posiy tioned in said shell over the exposed reinforcement, said shell being compressed upon the hose to clamp the cover and v.force said ductile ring into the interstices .of said reinforcement and to effect a fluid-tight seal between said nippl'e and said inner layer of rubber.

10. In combination with a non-metallic flexible reinforced hose having non-metallic layers on 

